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I recommend jellyfin (https://jellyfin.org/). It will require some tech skills to setup, but after that accessing it is as simple as going to the website address it is hosted at.

The best thing about Jellyfin is that it is free software: open source, permissive license, and no paid features (which alternatives like Plex have).

You can host Jellyfin on your own VPS, I host mine on a Hetzner VPS for just over 10 eur / month but that is very overkill, you can host one for far less. The only thing to keep in mind is that transcoding (streaming in a different resolution to the stored media) is quite computationally expensive so if lot's of people are transcoding at once you will need a good CPU.

Then any family member can just visit the IP address of the server in their web browser (or you can buy it a domain name). Jellyfin has a native iOS app they can use from their phones. For viewing it on TVs, there is an app for AppleTV which has Jellyfin support (cant remember the name right now but I can find it if you need it).

Amazon's continuous expansion is resulting in powerful monopsonies - if you want to for example create your own book, soon there is going to be no option but to sell it to Amazon so it will be in kindles and on audible. Amazon will have complete power over what cut of the profits to give you. Why bother making that new product you thought of when the only way to sell it is by listing it on Amazon and eventually having Amazon copy it and sell under "Amazons Choice".

So while Amazon is great for consumers, it is terrible for producers. And you have to remember - if you have a job you are a producer too. For now you are getting cheaper and more convenient service, but soon you will be struggling to find a job if this continues.

Running untrusted code in a sandboxed virtual machine is quite different to on a native CPU

Yes, if you had an oracle [1] that was able to provide information on whether the transaction had completed.

[1]: https://en.m.wikipedia.org/wiki/Blockchain_oracle

Your voting power is weighted by your balance, so those with higher balances have more voting power, and the representatives with the highest amount voted onto them have the highest amount of control over the network.

People interested in POS should look at Nano [1].

In Ethereum only "validators" validate transactions - those with more than 32 Eth in their own wallet.

In Nano "representatives" validate transactions - but individual users vote a representative to represent them (with their wallet balance as a weighting).

The difference is that you can have 0.00001 Nano and still have a say over the network. It also removes the need for "stake pools" where lots of people lend Eth to one person to make up 32 Eth together (with the hope you will get your money back).

[1]: https://nano.org

POW just gives the power to whoever can purchase the most computing power. It also gives control of the network to those directly benefiting from high fees.

At least POS gives the power to those that actually have an interest and stake in the currency itself.